The Cu/ZnO/Al2O3 is a typical industrial catalyst for water–gas-shift reaction and methanol synthesis, and is also gaining momentum in CO2 hydrogenation reaction. The dynamic evolution of the phases and microstructures of the precursor of this catalyst leads to a notable synergistic effect that defines its overall catalytic function and performance. To gain insights into the role and interaction between the relevant precursors, we compared Cu/ZnO/Al2O3 catalysts using a conventional co-precipitation and a fractional precipitation method, where the latter one shows an enhanced Cu/ZnOx interface due to a thorough and strong interaction between two components in the precursor. The ZnOx decoration on Cu with unsaturated Znδ+ species boosted the methanol formation to a rate of 508 gCH3OH‧kgcat−1‧h−1 with 58 % selectivity at 513 K and 3 MPa. This work provides mechanistic insights into the synergistic interplay between the involved phases in the Cu/ZnO/Al2O3 catalyst.

中文翻译：

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通过前驱体中的协同相互作用调整界面 Cu/ZnOx 增强 CO2 加氢反应


Cu/ZnO/Al2O3 是水-气变换反应和甲醇合成的典型工业催化剂，在 CO2 加氢反应中也越来越受欢迎。该催化剂前驱体的相和微观结构的动态演变导致了显着的协同效应，从而定义了其整体催化功能和性能。为了深入了解相关前驱体之间的作用和相互作用，我们使用传统的共沉淀法和分馏沉淀法比较了 Cu/ZnO/Al2O3 催化剂，其中后者由于前驱体中的两种组分之间彻底而强烈的相互作用，显示出增强的 Cu/ZnOx 界面。在铜上用不饱和 Znδ+ 物质进行 ZnOx 修饰，在 513 K 和 3 MPa 下将甲醇形成速率提高到 508 gCH3OH‧kgcat−1‧h−1，选择性为 58%。这项工作为 Cu/ZnO/Al2O3 催化剂中相关相之间的协同相互作用提供了机理见解。